GNU Paint is switching to git, starting from the Debian pkg-gpaint git repo as a base. Immediate work will be to port the existing code to gtk+ 3. Later plans are moving the code base to vala and to make use of GEGL

* Switch to using libglade; now libglade is a requirement for gpaint
* some UI adjustment in dialogs to fit the GNOME convention; using the Gtk+
standard about box
* Using GtkPrint to do printing when gtk+ version is >= 2.10; only basic
support is in place for now